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Materials and Construction

Materials and Construction
The temperature at which new grains are formed in the metal is called the __________ temperature.

Recrystallisation
Upper critical
Eutectic
Lower critical

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Materials and Construction
Soap kettle used in the production of laundry soap is made of

Concrete
Steel with top section nickel clad or stainless steel
Cast iron
Nickel

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Materials and Construction
White cast iron as compared to grey cast iron is

All of these
Very brittle
More durable
Very hard

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Materials and Construction
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?

Cast iron
Nickel
Steel
Karbate

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Materials and Construction
Concrete tank can be used to store

Sulphuric acid
Saturated brine
Ferrous sulphate
Alum

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Materials and Construction
Wood is corroded by

Chlorine (dry or wet)
All of these
SO₂ (dry or wet)
Hydrochloric acid

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